根据设置压力和节流孔通径来确定阀门的流容。
利用沉头孔通孔二次定位加工沉头孔盲孔的方法，可提高批量较大、精度要求较低的沉头孔加工效率，节约企业的加工成本。
This paper discussed a method of counterbore machining by using though-hole orientation to improve the efficiency of lower exact counterbore volume-produce and reduce the cost of corporation.
采用喷流焊的方法拆除这些通孔元件可以避免这些问题。
Using the method of jet welding dismantling these through-hole components to avoid these problems.
将电路板放置在焊台上，针对需要焊接的通孔元件管腿，选择合适的喷锡口，启动波峰焊接。
The circuit board is placed in the welding stage, the pins through hole components welding, choose appropriate spray tin, soldering start.
传统的通孔元件的焊接采用波峰焊或手工焊接。目前电路板上表面贴装元件和通孔元件混合在一起。
Through hole components welding using traditional manual welding or soldering. The circuit board surface mount components and through-hole components mixed together.
双反射带通箱，由于它的导向孔在很大的频率范围内控制了锥盆动作，所以产生的失真最小，同时还表现出最好的功率承受特性。
The dual-reflex bandpass, due to the fact that its ports control cone motion over a wider range of frequencies, produces the least distortion and exhibits the best power-handling characteristics.
导向孔和双反射带通箱设计比密闭箱的失真更小一些，但是差别不大。
The ported box and the bandpass designs produce less distortion than the sealed box, but the difference is marginal.
从电路板上拆除多引脚的通孔元件和大热容量的通孔元件比较麻烦，比如变压器、接插件。
Removed from the circuit board through-hole components via multi pin component and the large heat capacity is quite troublesome, such as transformer, connector.
从箱体阻尼损失来看，导向孔和双反射带通箱设计在极低频下比密封箱和单反射式带通箱设计有着更大的失真。
Related to the loss of enclosure damping, ported and dual-reflex bandpass designs also exhibit higher distortion levels at very low frequencies than sealed or single-reflex bandpass designs.
轴承圈通孔使轴承特殊的设计可能使传动装置来驱动有轴承支持的结构。
Through-holes in the bearing rings make it possible to bolt the bearings to the lower and upper structure.
首先最重要的一点：如果煤气管道内着火，应立即封闭所有入孔、放散管、采封管，并向管道内通大量蒸汽灭火。
First of all the most important point: if the gas pipeline inner fire, immediately closed all into the hole, radiation tube and sealing pipe, and in general to pipe of steam to extinguish fire.
具有外形尺寸小、重量轻、通孔和转速适中、性能可靠等特点，各项指标均能满足一般数控车床的需要。
They are with feature compact construction, light weight, moderate center hole and speed, reliable performance, and meet requirements of nc turning lathes.
是否通过切片检验pth与小导通孔孔壁状况，并有相应的改善对策跟踪？
Is PTH and small via hole wall quality checked by cross-section and followed by a closed loop corrective action?
通孔盘状及平面阵列陶瓷多层电容器焊料所含的铅。
Lead in solders for the soldering to machined through hole discoidal and planar array ceramic multilayer capacitors.
在每个石墨列有一个通孔，其中一个技术通道上。
In each graphite column there is a through hole in which a technological channel is placed.
通孔的正视图。
接下来，宽带双反射带通和导向孔箱体也有很好的效率。
Next in line, the wide-bandwidth dual-reflex and the ported enclosure exhibit very good efficiency as well.
通孔技术需要能满足对轮廓形状的控制(包括控制倾斜度、形状、粗糙度、过刻蚀等)，同时又要求工艺能具有可靠性、实用性和重复性，最后，成本也要能被合理控制。
Through via technology should satisfy control requirement of outline, including tilt, shape, roughness, over-cut, and so on. The reliability, usability and duplication should be satisfied.
网印：在板两面完全涂覆阻焊油墨，包括导通孔、焊盘。
Screen Print: Solder mask coating will cover completely the panel holes, pads and traces, on both sides.
检漏孔中心线应对两相邻螺柱通孔跨中。
The leak detection hole axis should pass the middle of two neighboring studs clearance holes.
每一档数字都是比前档减少一半的通孔大小。
Each aperture size (referred to as a stop) is marked with a corresponding number that represents half the light of the previous stop.
但他们未能产生精确的结果，因为它们都忽略了和拥塞有关的迂回以及通孔和一些拐弯的影响。
But they basically fail to produce accurate results since they ignore congestion-related detouring and effects of the number of vias and bends.
针对纤维增强复合材料的属性特点，应用坐标系转换原理推导出通孔法测量复合材料残余应力时的应力释放系数公式。
The relieved coefficients during the measurement of the residual stresses in the fiber reinforced composites by the hole drilling method were given with conversion of the two coordinate systems.
波浪线不应画在通孔、通槽内或画在轮廓线外，因为这些地方没有断裂痕迹。
Waved lines can't be drawn in holes, grooves or outside the outlines, because there are no broken trails.
标准表面贴装技术或通孔技术提供足够的性能。
Standard surface-mount technology or through-hole techniques provide adequate performance.
综述了一种对印制线路板通孔镀的方法，即在孔壁上沉积有电镀用的碳黑—石墨层，以取代传统的化学镀铜工艺。
A process for through hole plating is reviewed in which conventional electroless copper plating is replaced by deposition of a carbon black-graphite layer.
四通孔布线算法用于实际MCM布线时，需要解决最大加权不相交匹配问题。
For the Four Via routing algorithm used in MCM routing, the maximum weighted non crossing match problem should be solved.
能量密度达到造成液态质量迁移条件的长脉冲激光，可获得较大的烧蚀率和截面积较大的通孔。
A long-pulse laser, whose energy density can cause the liquid mass transferred, can get a greater ablation ratio and a hole with larger cross section.
为了获得更高性能的TFT - LCD面板，在光刻时保证精细的图形成像十分重要，其中，如何制作出尺寸更小的通孔图形是主要的问题之一。
To make a TFT-LCD panel which has higher performance, fine patterning process of photolithography is needed. Making smaller via pattern is one of main issue for fine patter - ning.
分析了无通孔接地板对共面波导(CPW)至微带转换过渡的影响。
The transition effect of the via-free transition from coplanar waveguide (CPW) to microstrip is analyzed.
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